1 /* Copyright (C) 1993, 1995, 1997-2001, 2002 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Written by Per Bothner <bothner@cygnus.com>.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
20 As a special exception, if you link the code in this file with
21 files compiled with a GNU compiler to produce an executable,
22 that does not cause the resulting executable to be covered by
23 the GNU Lesser General Public License. This exception does not
24 however invalidate any other reasons why the executable file
25 might be covered by the GNU Lesser General Public License.
26 This exception applies to code released by its copyright holders
27 in files containing the exception. */
31 # define _POSIX_SOURCE
36 #include <sys/param.h>
37 #include <sys/types.h>
46 # include "../wcsmbs/wcsmbsload.h"
47 # include "../iconv/gconv_charset.h"
48 # include "../iconv/gconv_int.h"
49 # include <shlib-compat.h>
55 # define __set_errno(Val) errno = (Val)
60 # define open(Name, Flags, Prot) __open (Name, Flags, Prot)
61 # define close(FD) __close (FD)
62 # define lseek(FD, Offset, Whence) __lseek (FD, Offset, Whence)
63 # define read(FD, Buf, NBytes) __read (FD, Buf, NBytes)
64 # define write(FD, Buf, NBytes) __write (FD, Buf, NBytes)
66 # define _IO_new_do_write _IO_do_write
67 # define _IO_new_file_attach _IO_file_attach
68 # define _IO_new_file_close_it _IO_file_close_it
69 # define _IO_new_file_finish _IO_file_finish
70 # define _IO_new_file_fopen _IO_file_fopen
71 # define _IO_new_file_init _IO_file_init
72 # define _IO_new_file_setbuf _IO_file_setbuf
73 # define _IO_new_file_sync _IO_file_sync
74 # define _IO_new_file_overflow _IO_file_overflow
75 # define _IO_new_file_seekoff _IO_file_seekoff
76 # define _IO_new_file_underflow _IO_file_underflow
77 # define _IO_new_file_write _IO_file_write
78 # define _IO_new_file_xsputn _IO_file_xsputn
83 extern struct __gconv_trans_data __libio_translit attribute_hidden
;
87 /* An fstream can be in at most one of put mode, get mode, or putback mode.
88 Putback mode is a variant of get mode.
90 In a filebuf, there is only one current position, instead of two
91 separate get and put pointers. In get mode, the current position
92 is that of gptr(); in put mode that of pptr().
94 The position in the buffer that corresponds to the position
95 in external file system is normally _IO_read_end, except in putback
96 mode, when it is _IO_save_end.
97 If the field _fb._offset is >= 0, it gives the offset in
98 the file as a whole corresponding to eGptr(). (?)
101 If a filebuf is in put mode, then all of _IO_read_ptr, _IO_read_end,
102 and _IO_read_base are equal to each other. These are usually equal
103 to _IO_buf_base, though not necessarily if we have switched from
104 get mode to put mode. (The reason is to maintain the invariant
105 that _IO_read_end corresponds to the external file position.)
106 _IO_write_base is non-NULL and usually equal to _IO_base_base.
107 We also have _IO_write_end == _IO_buf_end, but only in fully buffered mode.
108 The un-flushed character are those between _IO_write_base and _IO_write_ptr.
111 If a filebuf is in get or putback mode, eback() != egptr().
112 In get mode, the unread characters are between gptr() and egptr().
113 The OS file position corresponds to that of egptr().
116 Putback mode is used to remember "excess" characters that have
117 been sputbackc'd in a separate putback buffer.
118 In putback mode, the get buffer points to the special putback buffer.
119 The unread characters are the characters between gptr() and egptr()
120 in the putback buffer, as well as the area between save_gptr()
121 and save_egptr(), which point into the original reserve buffer.
122 (The pointers save_gptr() and save_egptr() are the values
123 of gptr() and egptr() at the time putback mode was entered.)
124 The OS position corresponds to that of save_egptr().
126 LINE BUFFERED OUTPUT:
127 During line buffered output, _IO_write_base==base() && epptr()==base().
128 However, ptr() may be anywhere between base() and ebuf().
129 This forces a call to filebuf::overflow(int C) on every put.
130 If there is more space in the buffer, and C is not a '\n',
131 then C is inserted, and pptr() incremented.
134 If a filebuf is unbuffered(), the _shortbuf[1] is used as the buffer.
137 #define CLOSED_FILEBUF_FLAGS \
138 (_IO_IS_FILEBUF+_IO_NO_READS+_IO_NO_WRITES+_IO_TIED_PUT_GET)
142 _IO_new_file_init (fp
)
143 struct _IO_FILE_plus
*fp
;
145 /* POSIX.1 allows another file handle to be used to change the position
146 of our file descriptor. Hence we actually don't know the actual
147 position before we do the first fseek (and until a following fflush). */
148 fp
->file
._offset
= _IO_pos_BAD
;
149 fp
->file
._IO_file_flags
|= CLOSED_FILEBUF_FLAGS
;
151 INTUSE(_IO_link_in
) (fp
);
152 fp
->file
._fileno
= -1;
154 INTDEF2(_IO_new_file_init
, _IO_file_init
)
157 _IO_new_file_close_it (fp
)
160 int write_status
, close_status
;
161 if (!_IO_file_is_open (fp
))
164 if ((fp
->_flags
& _IO_NO_WRITES
) == 0
165 && (fp
->_flags
& _IO_CURRENTLY_PUTTING
) != 0)
166 write_status
= _IO_do_flush (fp
);
170 INTUSE(_IO_unsave_markers
) (fp
);
172 close_status
= _IO_SYSCLOSE (fp
);
177 INTUSE(_IO_setb
) (fp
, NULL
, NULL
, 0);
178 _IO_setg (fp
, NULL
, NULL
, NULL
);
179 _IO_setp (fp
, NULL
, NULL
);
181 #if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
184 if (_IO_have_wbackup (fp
))
185 INTUSE(_IO_free_wbackup_area
) (fp
);
186 INTUSE(_IO_wsetb
) (fp
, NULL
, NULL
, 0);
187 _IO_wsetg (fp
, NULL
, NULL
, NULL
);
188 _IO_wsetp (fp
, NULL
, NULL
);
192 INTUSE(_IO_un_link
) ((struct _IO_FILE_plus
*) fp
);
193 fp
->_flags
= _IO_MAGIC
|CLOSED_FILEBUF_FLAGS
;
195 fp
->_offset
= _IO_pos_BAD
;
197 return close_status
? close_status
: write_status
;
199 INTDEF2(_IO_new_file_close_it
, _IO_file_close_it
)
202 _IO_new_file_finish (fp
, dummy
)
206 if (_IO_file_is_open (fp
))
209 if (!(fp
->_flags
& _IO_DELETE_DONT_CLOSE
))
212 INTUSE(_IO_default_finish
) (fp
, 0);
214 INTDEF2(_IO_new_file_finish
, _IO_file_finish
)
216 #if defined __GNUC__ && __GNUC__ >= 2
220 _IO_file_open (fp
, filename
, posix_mode
, prot
, read_write
, is32not64
)
222 const char *filename
;
231 ? open (filename
, posix_mode
, prot
)
232 : _G_OPEN64 (filename
, posix_mode
, prot
));
234 fdesc
= open (filename
, posix_mode
, prot
);
239 _IO_mask_flags (fp
, read_write
,_IO_NO_READS
+_IO_NO_WRITES
+_IO_IS_APPENDING
);
240 if ((read_write
& _IO_IS_APPENDING
) && (read_write
& _IO_NO_READS
))
241 if (_IO_SEEKOFF (fp
, (_IO_off64_t
)0, _IO_seek_end
, _IOS_INPUT
|_IOS_OUTPUT
)
242 == _IO_pos_BAD
&& errno
!= ESPIPE
)
247 INTUSE(_IO_link_in
) ((struct _IO_FILE_plus
*) fp
);
252 _IO_new_file_fopen (fp
, filename
, mode
, is32not64
)
254 const char *filename
;
258 int oflags
= 0, omode
;
265 const char *last_recognized
;
268 if (_IO_file_is_open (fp
))
274 read_write
= _IO_NO_WRITES
;
278 oflags
= O_CREAT
|O_TRUNC
;
279 read_write
= _IO_NO_READS
;
283 oflags
= O_CREAT
|O_APPEND
;
284 read_write
= _IO_NO_READS
|_IO_IS_APPENDING
;
287 __set_errno (EINVAL
);
291 last_recognized
= mode
;
293 for (i
= 1; i
< 4; ++i
)
301 read_write
&= _IO_IS_APPENDING
;
303 last_recognized
= mode
;
309 last_recognized
= mode
;
314 last_recognized
= mode
;
323 result
= _IO_file_open (fp
, filename
, omode
|oflags
, oprot
, read_write
,
330 /* Test whether the mode string specifies the conversion. */
331 cs
= strstr (last_recognized
+ 1, ",ccs=");
334 /* Yep. Load the appropriate conversions and set the orientation
336 struct gconv_fcts fcts
;
337 struct _IO_codecvt
*cc
;
338 char *endp
= __strchrnul (cs
+ 5, ',');
339 char ccs
[endp
- (cs
+ 5) + 3];
341 *((char *) __mempcpy (ccs
, cs
+ 5, endp
- (cs
+ 5))) = '\0';
344 if (__wcsmbs_named_conv (&fcts
, ccs
[2] == '\0'
345 ? upstr (ccs
, cs
+ 5) : ccs
) != 0)
347 /* Something went wrong, we cannot load the conversion modules.
348 This means we cannot proceed since the user explicitly asked
350 __set_errno (EINVAL
);
354 assert (fcts
.towc_nsteps
== 1);
355 assert (fcts
.tomb_nsteps
== 1);
357 fp
->_wide_data
->_IO_read_ptr
= fp
->_wide_data
->_IO_read_end
;
358 fp
->_wide_data
->_IO_write_ptr
= fp
->_wide_data
->_IO_write_base
;
360 /* Clear the state. We start all over again. */
361 memset (&fp
->_wide_data
->_IO_state
, '\0', sizeof (__mbstate_t
));
362 memset (&fp
->_wide_data
->_IO_last_state
, '\0', sizeof (__mbstate_t
));
364 cc
= fp
->_codecvt
= &fp
->_wide_data
->_codecvt
;
366 /* The functions are always the same. */
367 *cc
= __libio_codecvt
;
369 cc
->__cd_in
.__cd
.__nsteps
= fcts
.towc_nsteps
;
370 cc
->__cd_in
.__cd
.__steps
= fcts
.towc
;
372 cc
->__cd_in
.__cd
.__data
[0].__invocation_counter
= 0;
373 cc
->__cd_in
.__cd
.__data
[0].__internal_use
= 1;
374 cc
->__cd_in
.__cd
.__data
[0].__flags
= __GCONV_IS_LAST
;
375 cc
->__cd_in
.__cd
.__data
[0].__statep
= &result
->_wide_data
->_IO_state
;
377 /* XXX For now no transliteration. */
378 cc
->__cd_in
.__cd
.__data
[0].__trans
= NULL
;
380 cc
->__cd_out
.__cd
.__nsteps
= fcts
.tomb_nsteps
;
381 cc
->__cd_out
.__cd
.__steps
= fcts
.tomb
;
383 cc
->__cd_out
.__cd
.__data
[0].__invocation_counter
= 0;
384 cc
->__cd_out
.__cd
.__data
[0].__internal_use
= 1;
385 cc
->__cd_out
.__cd
.__data
[0].__flags
= __GCONV_IS_LAST
;
386 cc
->__cd_out
.__cd
.__data
[0].__statep
=
387 &result
->_wide_data
->_IO_state
;
389 /* And now the transliteration. */
390 cc
->__cd_out
.__cd
.__data
[0].__trans
= &__libio_translit
;
392 /* Set the mode now. */
395 /* We don't need the step data structure anymore. */
396 __gconv_release_cache (fcts
.towc
, fcts
.towc_nsteps
);
397 __gconv_release_cache (fcts
.tomb
, fcts
.tomb_nsteps
);
400 #endif /* GNU libc */
404 INTDEF2(_IO_new_file_fopen
, _IO_file_fopen
)
407 _IO_new_file_attach (fp
, fd
)
411 if (_IO_file_is_open (fp
))
414 fp
->_flags
&= ~(_IO_NO_READS
+_IO_NO_WRITES
);
415 fp
->_flags
|= _IO_DELETE_DONT_CLOSE
;
416 /* Get the current position of the file. */
417 /* We have to do that since that may be junk. */
418 fp
->_offset
= _IO_pos_BAD
;
419 if (_IO_SEEKOFF (fp
, (_IO_off64_t
)0, _IO_seek_cur
, _IOS_INPUT
|_IOS_OUTPUT
)
420 == _IO_pos_BAD
&& errno
!= ESPIPE
)
424 INTDEF2(_IO_new_file_attach
, _IO_file_attach
)
427 _IO_new_file_setbuf (fp
, p
, len
)
432 if (_IO_default_setbuf (fp
, p
, len
) == NULL
)
435 fp
->_IO_write_base
= fp
->_IO_write_ptr
= fp
->_IO_write_end
437 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
441 INTDEF2(_IO_new_file_setbuf
, _IO_file_setbuf
)
445 _IO_file_setbuf_mmap (fp
, p
, len
)
452 /* Change the function table. */
453 _IO_JUMPS ((struct _IO_FILE_plus
*) fp
) = &INTUSE(_IO_file_jumps
);
454 fp
->_wide_data
->_wide_vtable
= &_IO_wfile_jumps
;
456 /* And perform the normal operation. */
457 result
= _IO_new_file_setbuf (fp
, p
, len
);
459 /* If the call failed, restore to using mmap. */
462 _IO_JUMPS ((struct _IO_FILE_plus
*) fp
) = &_IO_file_jumps_mmap
;
463 fp
->_wide_data
->_wide_vtable
= &_IO_wfile_jumps_mmap
;
469 static int new_do_write
__P ((_IO_FILE
*, const char *, _IO_size_t
));
471 /* Write TO_DO bytes from DATA to FP.
472 Then mark FP as having empty buffers. */
475 _IO_new_do_write (fp
, data
, to_do
)
481 || (_IO_size_t
) new_do_write (fp
, data
, to_do
) == to_do
) ? 0 : EOF
;
483 INTDEF2(_IO_new_do_write
, _IO_do_write
)
487 new_do_write (fp
, data
, to_do
)
493 if (fp
->_flags
& _IO_IS_APPENDING
)
494 /* On a system without a proper O_APPEND implementation,
495 you would need to sys_seek(0, SEEK_END) here, but is
496 is not needed nor desirable for Unix- or Posix-like systems.
497 Instead, just indicate that offset (before and after) is
499 fp
->_offset
= _IO_pos_BAD
;
500 else if (fp
->_IO_read_end
!= fp
->_IO_write_base
)
503 = _IO_SYSSEEK (fp
, fp
->_IO_write_base
- fp
->_IO_read_end
, 1);
504 if (new_pos
== _IO_pos_BAD
)
506 fp
->_offset
= new_pos
;
508 count
= _IO_SYSWRITE (fp
, data
, to_do
);
509 if (fp
->_cur_column
&& count
)
510 fp
->_cur_column
= INTUSE(_IO_adjust_column
) (fp
->_cur_column
- 1, data
,
512 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
513 fp
->_IO_write_base
= fp
->_IO_write_ptr
= fp
->_IO_buf_base
;
514 fp
->_IO_write_end
= (fp
->_mode
<= 0
515 && (fp
->_flags
& (_IO_LINE_BUF
+_IO_UNBUFFERED
))
516 ? fp
->_IO_buf_base
: fp
->_IO_buf_end
);
521 _IO_new_file_underflow (fp
)
526 /* SysV does not make this test; take it out for compatibility */
527 if (fp
->_flags
& _IO_EOF_SEEN
)
531 if (fp
->_flags
& _IO_NO_READS
)
533 fp
->_flags
|= _IO_ERR_SEEN
;
537 if (fp
->_IO_read_ptr
< fp
->_IO_read_end
)
538 return *(unsigned char *) fp
->_IO_read_ptr
;
540 if (fp
->_IO_buf_base
== NULL
)
542 /* Maybe we already have a push back pointer. */
543 if (fp
->_IO_save_base
!= NULL
)
545 free (fp
->_IO_save_base
);
546 fp
->_flags
&= ~_IO_IN_BACKUP
;
548 INTUSE(_IO_doallocbuf
) (fp
);
551 /* Flush all line buffered files before reading. */
552 /* FIXME This can/should be moved to genops ?? */
553 if (fp
->_flags
& (_IO_LINE_BUF
|_IO_UNBUFFERED
))
556 INTUSE(_IO_flush_all_linebuffered
) ();
558 /* We used to flush all line-buffered stream. This really isn't
559 required by any standard. My recollection is that
560 traditional Unix systems did this for stdout. stderr better
561 not be line buffered. So we do just that here
562 explicitly. --drepper */
563 _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile
,
565 _IO_flockfile (_IO_stdout
);
567 if ((_IO_stdout
->_flags
& (_IO_LINKED
| _IO_NO_WRITES
| _IO_LINE_BUF
))
568 == (_IO_LINKED
| _IO_LINE_BUF
))
569 _IO_OVERFLOW (_IO_stdout
, EOF
);
571 _IO_funlockfile (_IO_stdout
);
572 _IO_cleanup_region_end (0);
576 INTUSE(_IO_switch_to_get_mode
) (fp
);
578 /* This is very tricky. We have to adjust those
579 pointers before we call _IO_SYSREAD () since
580 we may longjump () out while waiting for
581 input. Those pointers may be screwed up. H.J. */
582 fp
->_IO_read_base
= fp
->_IO_read_ptr
= fp
->_IO_buf_base
;
583 fp
->_IO_read_end
= fp
->_IO_buf_base
;
584 fp
->_IO_write_base
= fp
->_IO_write_ptr
= fp
->_IO_write_end
587 count
= _IO_SYSREAD (fp
, fp
->_IO_buf_base
,
588 fp
->_IO_buf_end
- fp
->_IO_buf_base
);
592 fp
->_flags
|= _IO_EOF_SEEN
;
594 fp
->_flags
|= _IO_ERR_SEEN
, count
= 0;
596 fp
->_IO_read_end
+= count
;
599 if (fp
->_offset
!= _IO_pos_BAD
)
600 _IO_pos_adjust (fp
->_offset
, count
);
601 return *(unsigned char *) fp
->_IO_read_ptr
;
603 INTDEF2(_IO_new_file_underflow
, _IO_file_underflow
)
605 /* Guts of underflow callback if we mmap the file. This stats the file and
606 updates the stream state to match. In the normal case we return zero.
607 If the file is no longer eligible for mmap, its jump tables are reset to
608 the vanilla ones and we return nonzero. */
610 mmap_remap_check (_IO_FILE
*fp
)
614 if (_IO_SYSSTAT (fp
, &st
) == 0
615 && S_ISREG (st
.st_mode
) && st
.st_size
!= 0
616 /* Limit the file size to 1MB for 32-bit machines. */
617 && (sizeof (ptrdiff_t) > 4 || st
.st_size
< 1*1024*1024))
619 const size_t pagesize
= __getpagesize ();
620 # define ROUNDED(x) (((x) + pagesize - 1) & ~(pagesize - 1))
621 if (ROUNDED (st
.st_size
) < ROUNDED (fp
->_IO_buf_end
624 /* We can trim off some pages past the end of the file. */
625 (void) __munmap (fp
->_IO_buf_base
+ ROUNDED (st
.st_size
),
626 ROUNDED (fp
->_IO_buf_end
- fp
->_IO_buf_base
)
627 - ROUNDED (st
.st_size
));
628 fp
->_IO_buf_end
= fp
->_IO_buf_base
+ st
.st_size
;
630 else if (ROUNDED (st
.st_size
) > ROUNDED (fp
->_IO_buf_end
633 /* The file added some pages. We need to remap it. */
635 #if defined __linux__ /* XXX */
636 p
= __mremap (fp
->_IO_buf_base
, ROUNDED (fp
->_IO_buf_end
638 ROUNDED (st
.st_size
), MREMAP_MAYMOVE
);
641 (void) __munmap (fp
->_IO_buf_base
,
642 fp
->_IO_buf_end
- fp
->_IO_buf_base
);
646 (void) __munmap (fp
->_IO_buf_base
,
647 fp
->_IO_buf_end
- fp
->_IO_buf_base
);
649 p
= _G_MMAP64 (NULL
, st
.st_size
, PROT_READ
, MAP_SHARED
,
652 p
= __mmap (NULL
, st
.st_size
, PROT_READ
, MAP_SHARED
,
658 fp
->_IO_buf_base
= p
;
659 fp
->_IO_buf_end
= fp
->_IO_buf_base
+ st
.st_size
;
663 /* The number of pages didn't change. */
664 fp
->_IO_buf_end
= fp
->_IO_buf_base
+ st
.st_size
;
668 fp
->_offset
-= fp
->_IO_read_end
- fp
->_IO_read_ptr
;
669 _IO_setg (fp
, fp
->_IO_buf_base
,
670 fp
->_offset
< fp
->_IO_buf_end
- fp
->_IO_buf_base
671 ? fp
->_IO_buf_base
+ fp
->_offset
: fp
->_IO_buf_end
,
674 /* If we are already positioned at or past the end of the file, don't
675 change the current offset. If not, seek past what we have mapped,
676 mimicking the position left by a normal underflow reading into its
679 if (fp
->_offset
< fp
->_IO_buf_end
- fp
->_IO_buf_base
)
687 (fp
->_fileno
, fp
->_IO_buf_end
- fp
->_IO_buf_base
, SEEK_SET
)
688 != fp
->_IO_buf_end
- fp
->_IO_buf_base
)
689 fp
->_flags
|= _IO_ERR_SEEN
;
691 fp
->_offset
= fp
->_IO_buf_end
- fp
->_IO_buf_base
;
698 /* Life is no longer good for mmap. Punt it. */
699 (void) __munmap (fp
->_IO_buf_base
,
700 fp
->_IO_buf_end
- fp
->_IO_buf_base
);
702 fp
->_IO_buf_base
= fp
->_IO_buf_end
= NULL
;
703 _IO_setg (fp
, NULL
, NULL
, NULL
);
705 _IO_JUMPS ((struct _IO_FILE_plus
*) fp
) = &INTUSE(_IO_file_jumps
);
707 _IO_JUMPS ((struct _IO_FILE_plus
*) fp
) = &_IO_wfile_jumps
;
708 fp
->_wide_data
->_wide_vtable
= &_IO_wfile_jumps
;
714 /* Special callback replacing the underflow callbacks if we mmap the file. */
716 _IO_file_underflow_mmap (_IO_FILE
*fp
)
718 if (fp
->_IO_read_ptr
< fp
->_IO_read_end
)
719 return *(unsigned char *) fp
->_IO_read_ptr
;
721 if (__builtin_expect (mmap_remap_check (fp
), 0))
722 /* We punted to the regular file functions. */
723 return _IO_UNDERFLOW (fp
);
725 if (fp
->_IO_read_ptr
< fp
->_IO_read_end
)
726 return *(unsigned char *) fp
->_IO_read_ptr
;
728 fp
->_flags
|= _IO_EOF_SEEN
;
733 decide_maybe_mmap (_IO_FILE
*fp
)
735 /* We use the file in read-only mode. This could mean we can
736 mmap the file and use it without any copying. But not all
737 file descriptors are for mmap-able objects and on 32-bit
738 machines we don't want to map files which are too large since
739 this would require too much virtual memory. */
742 if (_IO_SYSSTAT (fp
, &st
) == 0
743 && S_ISREG (st
.st_mode
) && st
.st_size
!= 0
744 /* Limit the file size to 1MB for 32-bit machines. */
745 && (sizeof (ptrdiff_t) > 4 || st
.st_size
< 1*1024*1024)
747 && (fp
->_offset
== _IO_pos_BAD
|| fp
->_offset
<= st
.st_size
))
749 /* Try to map the file. */
753 p
= _G_MMAP64 (NULL
, st
.st_size
, PROT_READ
, MAP_SHARED
, fp
->_fileno
, 0);
755 p
= __mmap (NULL
, st
.st_size
, PROT_READ
, MAP_SHARED
, fp
->_fileno
, 0);
759 /* OK, we managed to map the file. Set the buffer up and use a
760 special jump table with simplified underflow functions which
761 never tries to read anything from the file. */
769 (fp
->_fileno
, st
.st_size
, SEEK_SET
) != st
.st_size
)
771 (void) __munmap (p
, st
.st_size
);
772 fp
->_offset
= _IO_pos_BAD
;
776 INTUSE(_IO_setb
) (fp
, p
, (char *) p
+ st
.st_size
, 0);
778 if (fp
->_offset
== _IO_pos_BAD
)
781 _IO_setg (fp
, p
, p
+ fp
->_offset
, p
+ st
.st_size
);
782 fp
->_offset
= st
.st_size
;
785 _IO_JUMPS ((struct _IO_FILE_plus
*)fp
) = &_IO_file_jumps_mmap
;
787 _IO_JUMPS ((struct _IO_FILE_plus
*)fp
) = &_IO_wfile_jumps_mmap
;
788 fp
->_wide_data
->_wide_vtable
= &_IO_wfile_jumps_mmap
;
795 /* We couldn't use mmap, so revert to the vanilla file operations. */
798 _IO_JUMPS ((struct _IO_FILE_plus
*) fp
) = &INTUSE(_IO_file_jumps
);
800 _IO_JUMPS ((struct _IO_FILE_plus
*) fp
) = &_IO_wfile_jumps
;
801 fp
->_wide_data
->_wide_vtable
= &_IO_wfile_jumps
;
805 _IO_file_underflow_maybe_mmap (_IO_FILE
*fp
)
807 /* This is the first read attempt. Choose mmap or vanilla operations
808 and then punt to the chosen underflow routine. */
809 decide_maybe_mmap (fp
);
810 return _IO_UNDERFLOW (fp
);
815 _IO_new_file_overflow (f
, ch
)
819 if (f
->_flags
& _IO_NO_WRITES
) /* SET ERROR */
821 f
->_flags
|= _IO_ERR_SEEN
;
825 /* If currently reading or no buffer allocated. */
826 if ((f
->_flags
& _IO_CURRENTLY_PUTTING
) == 0 || f
->_IO_write_base
== 0)
828 /* Allocate a buffer if needed. */
829 if (f
->_IO_write_base
== 0)
831 INTUSE(_IO_doallocbuf
) (f
);
832 _IO_setg (f
, f
->_IO_buf_base
, f
->_IO_buf_base
, f
->_IO_buf_base
);
834 /* Otherwise must be currently reading.
835 If _IO_read_ptr (and hence also _IO_read_end) is at the buffer end,
836 logically slide the buffer forwards one block (by setting the
837 read pointers to all point at the beginning of the block). This
838 makes room for subsequent output.
839 Otherwise, set the read pointers to _IO_read_end (leaving that
840 alone, so it can continue to correspond to the external position). */
841 if (f
->_IO_read_ptr
== f
->_IO_buf_end
)
842 f
->_IO_read_end
= f
->_IO_read_ptr
= f
->_IO_buf_base
;
843 f
->_IO_write_ptr
= f
->_IO_read_ptr
;
844 f
->_IO_write_base
= f
->_IO_write_ptr
;
845 f
->_IO_write_end
= f
->_IO_buf_end
;
846 f
->_IO_read_base
= f
->_IO_read_ptr
= f
->_IO_read_end
;
848 f
->_flags
|= _IO_CURRENTLY_PUTTING
;
849 if (f
->_mode
<= 0 && f
->_flags
& (_IO_LINE_BUF
+_IO_UNBUFFERED
))
850 f
->_IO_write_end
= f
->_IO_write_ptr
;
853 return _IO_new_do_write(f
, f
->_IO_write_base
,
854 f
->_IO_write_ptr
- f
->_IO_write_base
);
855 if (f
->_IO_write_ptr
== f
->_IO_buf_end
) /* Buffer is really full */
856 if (_IO_do_flush (f
) == EOF
)
858 *f
->_IO_write_ptr
++ = ch
;
859 if ((f
->_flags
& _IO_UNBUFFERED
)
860 || ((f
->_flags
& _IO_LINE_BUF
) && ch
== '\n'))
861 if (_IO_new_do_write(f
, f
->_IO_write_base
,
862 f
->_IO_write_ptr
- f
->_IO_write_base
) == EOF
)
864 return (unsigned char) ch
;
866 INTDEF2(_IO_new_file_overflow
, _IO_file_overflow
)
869 _IO_new_file_sync (fp
)
875 /* char* ptr = cur_ptr(); */
876 if (fp
->_IO_write_ptr
> fp
->_IO_write_base
)
877 if (_IO_do_flush(fp
)) return EOF
;
878 delta
= fp
->_IO_read_ptr
- fp
->_IO_read_end
;
882 if (_IO_in_backup (fp
))
883 delta
-= eGptr () - Gbase ();
885 _IO_off64_t new_pos
= _IO_SYSSEEK (fp
, delta
, 1);
886 if (new_pos
!= (_IO_off64_t
) EOF
)
887 fp
->_IO_read_end
= fp
->_IO_read_ptr
;
889 else if (errno
== ESPIPE
)
890 ; /* Ignore error from unseekable devices. */
896 fp
->_offset
= _IO_pos_BAD
;
897 /* FIXME: Cleanup - can this be shared? */
898 /* setg(base(), ptr, ptr); */
901 INTDEF2(_IO_new_file_sync
, _IO_file_sync
)
904 _IO_file_sync_mmap (_IO_FILE
*fp
)
906 if (fp
->_IO_read_ptr
!= fp
->_IO_read_end
)
909 if (_IO_in_backup (fp
))
910 delta
-= eGptr () - Gbase ();
918 (fp
->_fileno
, fp
->_IO_read_ptr
- fp
->_IO_buf_base
, SEEK_SET
)
919 != fp
->_IO_read_ptr
- fp
->_IO_buf_base
)
921 fp
->_flags
|= _IO_ERR_SEEN
;
925 fp
->_offset
= fp
->_IO_read_ptr
- fp
->_IO_buf_base
;
926 fp
->_IO_read_end
= fp
->_IO_read_ptr
= fp
->_IO_read_base
;
932 _IO_new_file_seekoff (fp
, offset
, dir
, mode
)
939 _IO_off64_t delta
, new_offset
;
941 /* POSIX.1 8.2.3.7 says that after a call the fflush() the file
942 offset of the underlying file must be exact. */
943 int must_be_exact
= (fp
->_IO_read_base
== fp
->_IO_read_end
944 && fp
->_IO_write_base
== fp
->_IO_write_ptr
);
947 dir
= _IO_seek_cur
, offset
= 0; /* Don't move any pointers. */
949 /* Flush unwritten characters.
950 (This may do an unneeded write if we seek within the buffer.
951 But to be able to switch to reading, we would need to set
952 egptr to ptr. That can't be done in the current design,
953 which assumes file_ptr() is eGptr. Anyway, since we probably
954 end up flushing when we close(), it doesn't make much difference.)
955 FIXME: simulate mem-papped files. */
957 if (fp
->_IO_write_ptr
> fp
->_IO_write_base
|| _IO_in_put_mode (fp
))
958 if (INTUSE(_IO_switch_to_get_mode
) (fp
))
961 if (fp
->_IO_buf_base
== NULL
)
963 /* It could be that we already have a pushback buffer. */
964 if (fp
->_IO_read_base
!= NULL
)
966 free (fp
->_IO_read_base
);
967 fp
->_flags
&= ~_IO_IN_BACKUP
;
969 INTUSE(_IO_doallocbuf
) (fp
);
970 _IO_setp (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
971 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
977 /* Adjust for read-ahead (bytes is buffer). */
978 offset
-= fp
->_IO_read_end
- fp
->_IO_read_ptr
;
979 if (fp
->_offset
== _IO_pos_BAD
)
981 /* Make offset absolute, assuming current pointer is file_ptr(). */
982 offset
+= fp
->_offset
;
985 __set_errno (EINVAL
);
996 if (_IO_SYSSTAT (fp
, &st
) == 0 && S_ISREG (st
.st_mode
))
998 offset
+= st
.st_size
;
1005 /* At this point, dir==_IO_seek_set. */
1007 /* If we are only interested in the current position we've found it now. */
1011 /* If destination is within current buffer, optimize: */
1012 if (fp
->_offset
!= _IO_pos_BAD
&& fp
->_IO_read_base
!= NULL
1013 && !_IO_in_backup (fp
))
1015 /* Offset relative to start of main get area. */
1016 _IO_off64_t rel_offset
= (offset
- fp
->_offset
1017 + (fp
->_IO_read_end
- fp
->_IO_read_base
));
1018 if (rel_offset
>= 0)
1021 if (_IO_in_backup (fp
))
1022 _IO_switch_to_main_get_area (fp
);
1024 if (rel_offset
<= fp
->_IO_read_end
- fp
->_IO_read_base
)
1026 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
+ rel_offset
,
1028 _IO_setp (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1030 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1035 /* If we have streammarkers, seek forward by reading ahead. */
1036 if (_IO_have_markers (fp
))
1038 int to_skip
= rel_offset
1039 - (fp
->_IO_read_ptr
- fp
->_IO_read_base
);
1040 if (ignore (to_skip
) != to_skip
)
1042 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1048 if (rel_offset
< 0 && rel_offset
>= Bbase () - Bptr ())
1050 if (!_IO_in_backup (fp
))
1051 _IO_switch_to_backup_area (fp
);
1052 gbump (fp
->_IO_read_end
+ rel_offset
- fp
->_IO_read_ptr
);
1053 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1060 INTUSE(_IO_unsave_markers
) (fp
);
1063 if (fp
->_flags
& _IO_NO_READS
)
1066 /* Try to seek to a block boundary, to improve kernel page management. */
1067 new_offset
= offset
& ~(fp
->_IO_buf_end
- fp
->_IO_buf_base
- 1);
1068 delta
= offset
- new_offset
;
1069 if (delta
> fp
->_IO_buf_end
- fp
->_IO_buf_base
)
1071 new_offset
= offset
;
1074 result
= _IO_SYSSEEK (fp
, new_offset
, 0);
1081 count
= _IO_SYSREAD (fp
, fp
->_IO_buf_base
,
1083 ? delta
: fp
->_IO_buf_end
- fp
->_IO_buf_base
));
1086 /* We weren't allowed to read, but try to seek the remainder. */
1087 offset
= count
== EOF
? delta
: delta
-count
;
1092 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
+ delta
,
1093 fp
->_IO_buf_base
+ count
);
1094 _IO_setp (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1095 fp
->_offset
= result
+ count
;
1096 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1100 INTUSE(_IO_unsave_markers
) (fp
);
1101 result
= _IO_SYSSEEK (fp
, offset
, dir
);
1104 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1105 fp
->_offset
= result
;
1106 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1107 _IO_setp (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1112 /* We need to do it since it is possible that the file offset in
1113 the kernel may be changed behind our back. It may happen when
1114 we fopen a file and then do a fork. One process may access the
1115 the file and the kernel file offset will be changed. */
1116 if (fp
->_offset
>= 0)
1117 _IO_SYSSEEK (fp
, fp
->_offset
, 0);
1121 INTDEF2(_IO_new_file_seekoff
, _IO_file_seekoff
)
1124 _IO_file_seekoff_mmap (fp
, offset
, dir
, mode
)
1132 /* If we are only interested in the current position, calculate it and
1133 return right now. This calculation does the right thing when we are
1134 using a pushback buffer, but in the usual case has the same value as
1135 (fp->_IO_read_ptr - fp->_IO_buf_base). */
1137 return fp
->_offset
- (fp
->_IO_read_end
- fp
->_IO_read_ptr
);
1142 /* Adjust for read-ahead (bytes is buffer). */
1143 offset
+= fp
->_IO_read_ptr
- fp
->_IO_read_base
;
1148 offset
+= fp
->_IO_buf_end
- fp
->_IO_buf_base
;
1151 /* At this point, dir==_IO_seek_set. */
1155 /* No negative offsets are valid. */
1156 __set_errno (EINVAL
);
1160 result
= _IO_SYSSEEK (fp
, offset
, 0);
1164 if (offset
> fp
->_IO_buf_end
- fp
->_IO_buf_base
)
1165 /* One can fseek arbitrarily past the end of the file
1166 and it is meaningless until one attempts to read.
1167 Leave the buffer pointers in EOF state until underflow. */
1168 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_end
, fp
->_IO_buf_end
);
1170 /* Adjust the read pointers to match the file position,
1171 but so the next read attempt will call underflow. */
1172 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
+ offset
,
1173 fp
->_IO_buf_base
+ offset
);
1175 fp
->_offset
= result
;
1177 _IO_mask_flags (fp
, 0, _IO_EOF_SEEN
);
1183 _IO_file_seekoff_maybe_mmap (fp
, offset
, dir
, mode
)
1189 /* We only get here when we haven't tried to read anything yet.
1190 So there is nothing more useful for us to do here than just
1191 the underlying lseek call. */
1193 _IO_off64_t result
= _IO_SYSSEEK (fp
, offset
, dir
);
1197 fp
->_offset
= result
;
1202 _IO_file_read (fp
, buf
, size
)
1207 return read (fp
->_fileno
, buf
, size
);
1209 INTDEF(_IO_file_read
)
1212 _IO_file_seek (fp
, offset
, dir
)
1218 return _G_LSEEK64 (fp
->_fileno
, offset
, dir
);
1220 return lseek (fp
->_fileno
, offset
, dir
);
1223 INTDEF(_IO_file_seek
)
1226 _IO_file_stat (fp
, st
)
1231 return _G_FSTAT64 (fp
->_fileno
, (struct _G_stat64
*) st
);
1233 return fstat (fp
->_fileno
, (struct stat
*) st
);
1236 INTDEF(_IO_file_stat
)
1239 _IO_file_close_mmap (fp
)
1242 /* In addition to closing the file descriptor we have to unmap the file. */
1243 (void) __munmap (fp
->_IO_buf_base
, fp
->_IO_buf_end
- fp
->_IO_buf_base
);
1244 fp
->_IO_buf_base
= fp
->_IO_buf_end
= NULL
;
1245 return close (fp
->_fileno
);
1252 return close (fp
->_fileno
);
1254 INTDEF(_IO_file_close
)
1257 _IO_new_file_write (f
, data
, n
)
1262 _IO_ssize_t to_do
= n
;
1265 _IO_ssize_t count
= write (f
->_fileno
, data
, to_do
);
1268 f
->_flags
|= _IO_ERR_SEEN
;
1272 data
= (void *) ((char *) data
+ count
);
1275 if (f
->_offset
>= 0)
1281 _IO_new_file_xsputn (f
, data
, n
)
1286 register const char *s
= (const char *) data
;
1287 _IO_size_t to_do
= n
;
1293 /* This is an optimized implementation.
1294 If the amount to be written straddles a block boundary
1295 (or the filebuf is unbuffered), use sys_write directly. */
1297 /* First figure out how much space is available in the buffer. */
1298 count
= f
->_IO_write_end
- f
->_IO_write_ptr
; /* Space available. */
1299 if ((f
->_flags
& _IO_LINE_BUF
) && (f
->_flags
& _IO_CURRENTLY_PUTTING
))
1301 count
= f
->_IO_buf_end
- f
->_IO_write_ptr
;
1304 register const char *p
;
1305 for (p
= s
+ n
; p
> s
; )
1316 /* Then fill the buffer. */
1324 f
->_IO_write_ptr
= __mempcpy (f
->_IO_write_ptr
, s
, count
);
1326 memcpy (f
->_IO_write_ptr
, s
, count
);
1327 f
->_IO_write_ptr
+= count
;
1333 register char *p
= f
->_IO_write_ptr
;
1334 register int i
= (int) count
;
1337 f
->_IO_write_ptr
= p
;
1341 if (to_do
+ must_flush
> 0)
1343 _IO_size_t block_size
, do_write
;
1344 /* Next flush the (full) buffer. */
1345 if (_IO_OVERFLOW (f
, EOF
) == EOF
)
1348 /* Try to maintain alignment: write a whole number of blocks.
1349 dont_write is what gets left over. */
1350 block_size
= f
->_IO_buf_end
- f
->_IO_buf_base
;
1351 do_write
= to_do
- (block_size
>= 128 ? to_do
% block_size
: 0);
1355 count
= new_do_write (f
, s
, do_write
);
1357 if (count
< do_write
)
1361 /* Now write out the remainder. Normally, this will fit in the
1362 buffer, but it's somewhat messier for line-buffered files,
1363 so we let _IO_default_xsputn handle the general case. */
1365 to_do
-= INTUSE(_IO_default_xsputn
) (f
, s
+do_write
, to_do
);
1369 INTDEF2(_IO_new_file_xsputn
, _IO_file_xsputn
)
1372 _IO_file_xsgetn (fp
, data
, n
)
1377 register _IO_size_t want
, have
;
1378 register _IO_ssize_t count
;
1379 register char *s
= data
;
1383 if (fp
->_IO_buf_base
== NULL
)
1385 /* Maybe we already have a push back pointer. */
1386 if (fp
->_IO_save_base
!= NULL
)
1388 free (fp
->_IO_save_base
);
1389 fp
->_flags
&= ~_IO_IN_BACKUP
;
1391 INTUSE(_IO_doallocbuf
) (fp
);
1396 have
= fp
->_IO_read_end
- fp
->_IO_read_ptr
;
1399 memcpy (s
, fp
->_IO_read_ptr
, want
);
1400 fp
->_IO_read_ptr
+= want
;
1408 s
= __mempcpy (s
, fp
->_IO_read_ptr
, have
);
1410 memcpy (s
, fp
->_IO_read_ptr
, have
);
1414 fp
->_IO_read_ptr
+= have
;
1417 /* Check for backup and repeat */
1418 if (_IO_in_backup (fp
))
1420 _IO_switch_to_main_get_area (fp
);
1424 /* If we now want less than a buffer, underflow and repeat
1425 the copy. Otherwise, _IO_SYSREAD directly to
1427 if (fp
->_IO_buf_base
1428 && want
< (size_t) (fp
->_IO_buf_end
- fp
->_IO_buf_base
))
1430 if (__underflow (fp
) == EOF
)
1436 /* These must be set before the sysread as we might longjmp out
1437 waiting for input. */
1438 _IO_setg (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1439 _IO_setp (fp
, fp
->_IO_buf_base
, fp
->_IO_buf_base
);
1441 /* Try to maintain alignment: read a whole number of blocks. */
1443 if (fp
->_IO_buf_base
)
1445 _IO_size_t block_size
= fp
->_IO_buf_end
- fp
->_IO_buf_base
;
1446 if (block_size
>= 128)
1447 count
-= want
% block_size
;
1450 count
= _IO_SYSREAD (fp
, s
, count
);
1454 fp
->_flags
|= _IO_EOF_SEEN
;
1456 fp
->_flags
|= _IO_ERR_SEEN
;
1463 if (fp
->_offset
!= _IO_pos_BAD
)
1464 _IO_pos_adjust (fp
->_offset
, count
);
1470 INTDEF(_IO_file_xsgetn
)
1472 static _IO_size_t _IO_file_xsgetn_mmap
__P ((_IO_FILE
*, void *, _IO_size_t
));
1474 _IO_file_xsgetn_mmap (fp
, data
, n
)
1479 register _IO_size_t have
;
1480 char *read_ptr
= fp
->_IO_read_ptr
;
1481 register char *s
= (char *) data
;
1483 have
= fp
->_IO_read_end
- fp
->_IO_read_ptr
;
1487 if (__builtin_expect (_IO_in_backup (fp
), 0))
1490 s
= __mempcpy (s
, read_ptr
, have
);
1492 memcpy (s
, read_ptr
, have
);
1496 _IO_switch_to_main_get_area (fp
);
1497 read_ptr
= fp
->_IO_read_ptr
;
1498 have
= fp
->_IO_read_end
- fp
->_IO_read_ptr
;
1503 /* Check that we are mapping all of the file, in case it grew. */
1504 if (__builtin_expect (mmap_remap_check (fp
), 0))
1505 /* We punted mmap, so complete with the vanilla code. */
1506 return s
- (char *) data
+ _IO_XSGETN (fp
, data
, n
);
1508 read_ptr
= fp
->_IO_read_ptr
;
1509 have
= fp
->_IO_read_end
- read_ptr
;
1514 fp
->_flags
|= _IO_EOF_SEEN
;
1518 have
= MIN (have
, n
);
1520 s
= __mempcpy (s
, read_ptr
, have
);
1522 memcpy (s
, read_ptr
, have
);
1525 fp
->_IO_read_ptr
= read_ptr
+ have
;
1528 return s
- (char *) data
;
1531 static _IO_size_t _IO_file_xsgetn_maybe_mmap
__P ((_IO_FILE
*, void *,
1534 _IO_file_xsgetn_maybe_mmap (fp
, data
, n
)
1539 /* We only get here if this is the first attempt to read something.
1540 Decide which operations to use and then punt to the chosen one. */
1542 decide_maybe_mmap (fp
);
1543 return _IO_XSGETN (fp
, data
, n
);
1547 versioned_symbol (libc
, _IO_new_do_write
, _IO_do_write
, GLIBC_2_1
);
1548 versioned_symbol (libc
, _IO_new_file_attach
, _IO_file_attach
, GLIBC_2_1
);
1549 versioned_symbol (libc
, _IO_new_file_close_it
, _IO_file_close_it
, GLIBC_2_1
);
1550 versioned_symbol (libc
, _IO_new_file_finish
, _IO_file_finish
, GLIBC_2_1
);
1551 versioned_symbol (libc
, _IO_new_file_fopen
, _IO_file_fopen
, GLIBC_2_1
);
1552 versioned_symbol (libc
, _IO_new_file_init
, _IO_file_init
, GLIBC_2_1
);
1553 versioned_symbol (libc
, _IO_new_file_setbuf
, _IO_file_setbuf
, GLIBC_2_1
);
1554 versioned_symbol (libc
, _IO_new_file_sync
, _IO_file_sync
, GLIBC_2_1
);
1555 versioned_symbol (libc
, _IO_new_file_overflow
, _IO_file_overflow
, GLIBC_2_1
);
1556 versioned_symbol (libc
, _IO_new_file_seekoff
, _IO_file_seekoff
, GLIBC_2_1
);
1557 versioned_symbol (libc
, _IO_new_file_underflow
, _IO_file_underflow
, GLIBC_2_1
);
1558 versioned_symbol (libc
, _IO_new_file_write
, _IO_file_write
, GLIBC_2_1
);
1559 versioned_symbol (libc
, _IO_new_file_xsputn
, _IO_file_xsputn
, GLIBC_2_1
);
1562 struct _IO_jump_t _IO_file_jumps
=
1565 JUMP_INIT(finish
, INTUSE(_IO_file_finish
)),
1566 JUMP_INIT(overflow
, INTUSE(_IO_file_overflow
)),
1567 JUMP_INIT(underflow
, INTUSE(_IO_file_underflow
)),
1568 JUMP_INIT(uflow
, INTUSE(_IO_default_uflow
)),
1569 JUMP_INIT(pbackfail
, INTUSE(_IO_default_pbackfail
)),
1570 JUMP_INIT(xsputn
, INTUSE(_IO_file_xsputn
)),
1571 JUMP_INIT(xsgetn
, INTUSE(_IO_file_xsgetn
)),
1572 JUMP_INIT(seekoff
, _IO_new_file_seekoff
),
1573 JUMP_INIT(seekpos
, _IO_default_seekpos
),
1574 JUMP_INIT(setbuf
, _IO_new_file_setbuf
),
1575 JUMP_INIT(sync
, _IO_new_file_sync
),
1576 JUMP_INIT(doallocate
, INTUSE(_IO_file_doallocate
)),
1577 JUMP_INIT(read
, INTUSE(_IO_file_read
)),
1578 JUMP_INIT(write
, _IO_new_file_write
),
1579 JUMP_INIT(seek
, INTUSE(_IO_file_seek
)),
1580 JUMP_INIT(close
, INTUSE(_IO_file_close
)),
1581 JUMP_INIT(stat
, INTUSE(_IO_file_stat
)),
1582 JUMP_INIT(showmanyc
, _IO_default_showmanyc
),
1583 JUMP_INIT(imbue
, _IO_default_imbue
)
1585 INTVARDEF(_IO_file_jumps
)
1587 struct _IO_jump_t _IO_file_jumps_mmap
=
1590 JUMP_INIT(finish
, INTUSE(_IO_file_finish
)),
1591 JUMP_INIT(overflow
, INTUSE(_IO_file_overflow
)),
1592 JUMP_INIT(underflow
, _IO_file_underflow_mmap
),
1593 JUMP_INIT(uflow
, INTUSE(_IO_default_uflow
)),
1594 JUMP_INIT(pbackfail
, INTUSE(_IO_default_pbackfail
)),
1595 JUMP_INIT(xsputn
, _IO_new_file_xsputn
),
1596 JUMP_INIT(xsgetn
, _IO_file_xsgetn_mmap
),
1597 JUMP_INIT(seekoff
, _IO_file_seekoff_mmap
),
1598 JUMP_INIT(seekpos
, _IO_default_seekpos
),
1599 JUMP_INIT(setbuf
, (_IO_setbuf_t
) _IO_file_setbuf_mmap
),
1600 JUMP_INIT(sync
, _IO_file_sync_mmap
),
1601 JUMP_INIT(doallocate
, INTUSE(_IO_file_doallocate
)),
1602 JUMP_INIT(read
, INTUSE(_IO_file_read
)),
1603 JUMP_INIT(write
, _IO_new_file_write
),
1604 JUMP_INIT(seek
, INTUSE(_IO_file_seek
)),
1605 JUMP_INIT(close
, _IO_file_close_mmap
),
1606 JUMP_INIT(stat
, INTUSE(_IO_file_stat
)),
1607 JUMP_INIT(showmanyc
, _IO_default_showmanyc
),
1608 JUMP_INIT(imbue
, _IO_default_imbue
)
1611 struct _IO_jump_t _IO_file_jumps_maybe_mmap
=
1614 JUMP_INIT(finish
, INTUSE(_IO_file_finish
)),
1615 JUMP_INIT(overflow
, INTUSE(_IO_file_overflow
)),
1616 JUMP_INIT(underflow
, _IO_file_underflow_maybe_mmap
),
1617 JUMP_INIT(uflow
, INTUSE(_IO_default_uflow
)),
1618 JUMP_INIT(pbackfail
, INTUSE(_IO_default_pbackfail
)),
1619 JUMP_INIT(xsputn
, _IO_new_file_xsputn
),
1620 JUMP_INIT(xsgetn
, _IO_file_xsgetn_maybe_mmap
),
1621 JUMP_INIT(seekoff
, _IO_file_seekoff_maybe_mmap
),
1622 JUMP_INIT(seekpos
, _IO_default_seekpos
),
1623 JUMP_INIT(setbuf
, (_IO_setbuf_t
) _IO_file_setbuf_mmap
),
1624 JUMP_INIT(sync
, _IO_new_file_sync
),
1625 JUMP_INIT(doallocate
, INTUSE(_IO_file_doallocate
)),
1626 JUMP_INIT(read
, INTUSE(_IO_file_read
)),
1627 JUMP_INIT(write
, _IO_new_file_write
),
1628 JUMP_INIT(seek
, INTUSE(_IO_file_seek
)),
1629 JUMP_INIT(close
, _IO_file_close
),
1630 JUMP_INIT(stat
, INTUSE(_IO_file_stat
)),
1631 JUMP_INIT(showmanyc
, _IO_default_showmanyc
),
1632 JUMP_INIT(imbue
, _IO_default_imbue
)